It's located in the engine bay, mounted on the bulkhead just to the left of centre. It's a brown box about the size of a cassette with a connector at either end. The right hand connector is from the hall effect sender and the left hand connector goes to the ignition coils. In my case it was the right hand connector that needed a clean. You can almost miss it because it's behind a bracket with four connectors mounted on it which are the lambda sensors and flywheel and crank position sensors.
Hope this helps!
